Ok, shouldn’t there be some kind of credit to Damon Knight for his 1950 shirt sci-fi story “To Serve Man” or the 1959 Twilight Zone episode based on it?
What (usually) works for me is to sing Mahna-Mahna, visualizing the Muppets in my head. It sticks long enough to drive out the previous earworm, then evaporates. I attribute it partly to the multi-media nature of the song and partially to the constantly changing rhythms…
And I thought I was the only one!